Difficult limit problem involving sine and tangent Sieve of Eratosthenes, Step by Step What is the meaning of the so-called "pregnant chad"? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed It's also easier to read 'append output and errors to this file' than 'send errors to output, append output to this file'. see more linked questions… Related 736How can I redirect and append both stdout and stderr to a file with Bash?549How to pipe stderr, and not stdout?7redirect stdout and stderr to a

I/O RedirectionTable of Contents20.1. Bash / ksh and other modern shell on Linux has three file descriptors:stdin (0)stdout (1)stderr (2)Syntax To redirect all output to fileThe syntax is as follows to redirect output (stdout) as It is analogous to a file handle in C.

[3]Using file descriptor 5 might cause problems. To the author of the original post, It depends what you need to achieve.

Not the answer you're looking for? Why is JK Rowling considered 'bad at math'? good explanation, I'd like to make a function on C that redirects STDIN and SDTOUT to an script, how can I do that, I mean, the exist a library's on C Yinipar's first letter with low quality when zooming in How to know if a meal was cooked with or contains alcohol?

What are the legal consequences for a tourist who runs out of gas on the Autobahn? If so how can I do it ? –rohith Jul 2 at 13:25 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using This will lead to both stderr and stdout go to file-name. cat File # ==> 1234.67890 # Random access, by golly. | # Pipe. # General purpose process and command chaining tool. # Similar to ">", but more general in effect.

Accepted answer resolved this the right way. –AoeAoe Sep 6 '12 at 15:39 1 @AoeAoe: This actually works in Bash 4 too. –mk12 Sep 6 '12 at 21:11 1 Reply Link TodorMinchev May 14, 2013, 9:03 pmRudyD +1 :) Reply Link Daniel August 26, 2013, 7:22 pmActually it means "first redirect STDERR to STDOUT, so any errors printed out on You can also use 1 instead of 2 so that stdout gets redirected to the 'file' share|improve this answer answered Sep 24 '11 at 5:53 PaulDaviesC 512922 add a comment| Your Can't a user change his session information to impersonate others?

To redirect stderr as well, you have a few choices: Redirect stderr to another file: command > out 2>error Redirect stderr to stdout (&1), and then redirect stdout to a file: If you put two blocks of an element together, why don't they bond? Should be: yourcommand &>filename (redirects both stdout and stderr to filename). share|improve this answer edited Mar 3 at 18:35 Alois Mahdal 3,41322854 answered Dec 12 '15 at 6:17 Pradeep Goswami 629415 add a comment| up vote 8 down vote Try this You_command

Reply Link Security: Are you a robot or human?Please enable JavaScript to submit this form.Cancel replyLeave a Comment Name Email Comment You can use these HTML tags and attributes: exec 3>&- # Close fd 3. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed i>&j # Redirects file descriptor i to j. # All output of file pointed to by i gets sent to file pointed to by j. >&j #

Browse other questions tagged linux bash redirect stream pipe or ask your own question. Changing STDOUT after STDERR had been redirected to STDOUT won't change STDERR. Faria May 18 '15 at 13:38 @terdon how do I redirect output to a file which has no "w" permission for others , I meant to ask can I Want to make things right, don't know with whom How do spaceship-mounted railguns not destroy the ships firing them?

At the same time it copies the same input to FD #3(terminal) the second part, very similar, is about doing the same trick for STDERR and FDs #2 and #4. Equation which has to be solved with logarithms Previous company name is ISIS, how to list on CV? Hot Network Questions How is the ATC language structured? Whereas, > will overwrite any existing data in the file.

bash stdout stderr share|improve this question edited Sep 23 '11 at 10:11 asked Sep 23 '11 at 9:35 sdmythos_gr 1,65121321 2 possible duplicate of Redirect stderr and stdout in a I really like your explanation of how 1> can be written as > –user784637 Oct 26 '11 at 13:25 How is this different from like command &2>err.log, I think read -n 4 as just > since the default file descriptor is the output.

asked 4 years ago viewed 49659 times active 2 years ago Visit Chat Linked 9 Logging stdout and stderr of node 6 Cause runtime exceptions to be properly ordered with println Browse other questions tagged command-line redirect or ask your own question. Reply Link Shane Hathaway February 24, 2012, 1:02 amSayed: that line means execute the command while redirecting both stdout and stderr to a file given by file-name. Reply Link xuhui November 24, 2014, 1:19 pmUseful for me!!!!

Sieve of Eratosthenes, Step by Step What are the legal consequences for a tourist who runs out of gas on the Autobahn? Any help would be greatly appreciated. Just a little change and we're talking physical education 4 dogs have been born in the same week. Basically you can: redirect stdout to a file redirect stderr to a file redirect stdout to a stderr redirect stderr to a stdout redirect stderr and stdout to a file redirect An AND list has the form command1 && command2 command2 is exe...

ls -lR > dir-tree.list # Creates a file containing a listing of the directory tree. : > filename # The > truncates file "filename" to zero length. # If file not Just a little change and we're talking physical education Publishing a mathematical research article on research which is already done? For System V streams, see STREAMS. Like what you read? Also when we talk about these files from the perspective of compiler is it different than when it is compared with say a program? –S...

Take a look at Unix tee command for more advanced redirections using tee. Equation which has to be solved with logarithms Were students "forced to recite 'Allah is the only God'" in Tennessee public schools? I may be asking too many question but does anyone understand why I need to turn off buffering when piping to other process? –Ladislav Mrnka Jun 23 '15 at 10:40 Is there a difference between u and c in mknod How to find positive things in a code review? I think most of the pi...